de.lmu.ifi.dbs.elki.distance.distancefunction

Class WeightedDistanceFunction

java.lang.Object

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractPrimitiveDistanceFunction<NumberVector<?>,DoubleDistance>

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractVectorDoubleDistanceFunction

de.lmu.ifi.dbs.elki.distance.distancefunction.WeightedDistanceFunction

All Implemented Interfaces:

DistanceFunction<NumberVector<?>,DoubleDistance>, NumberVectorDistanceFunction<DoubleDistance>, PrimitiveDistanceFunction<NumberVector<?>,DoubleDistance>, PrimitiveDoubleDistanceFunction<NumberVector<?>>, Parameterizable

Direct Known Subclasses:

HSBHistogramQuadraticDistanceFunction, RGBHistogramQuadraticDistanceFunction

public class WeightedDistanceFunction
extends AbstractVectorDoubleDistanceFunction

Provides the Weighted distance for feature vectors.

Field Summary

Fields

Modifier and Type	Field and Description
protected Matrix	weightMatrix The weight matrix.

Constructor Summary

Constructors

Constructor and Description
WeightedDistanceFunction(Matrix weightMatrix) Provides the Weighted distance for feature vectors.

Method Summary

Methods

Modifier and Type	Method and Description
double	doubleDistance(NumberVector<?> o1, NumberVector<?> o2) Computes the distance between two given Objects according to this distance function.
VectorFieldTypeInformation<? super NumberVector<?>>	getInputTypeRestriction() Get the input data type of the function.

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractVectorDoubleDistanceFunction

dimensionality, dimensionality, dimensionality, dimensionality, distance, getDistanceFactory

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractPrimitiveDistanceFunction

instantiate, isMetric, isSymmetric

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.DistanceFunction

instantiate, isMetric, isSymmetric

Field Detail

weightMatrix

protected Matrix weightMatrix

The weight matrix.

Constructor Detail

WeightedDistanceFunction

public WeightedDistanceFunction(Matrix weightMatrix)

Provides the Weighted distance for feature vectors.

Parameters:

weightMatrix - weight matrix

Method Detail

doubleDistance

public double doubleDistance(NumberVector<?> o1,
                    NumberVector<?> o2)

Description copied from interface: PrimitiveDoubleDistanceFunction

Computes the distance between two given Objects according to this distance function.

Parameters:

o1 - first Object

o2 - second Object

Returns:

the distance between two given Objects according to this distance function

getInputTypeRestriction

public VectorFieldTypeInformation<? super NumberVector<?>> getInputTypeRestriction()

Description copied from interface: DistanceFunction

Get the input data type of the function.

Specified by:

getInputTypeRestriction in interface DistanceFunction<NumberVector<?>,DoubleDistance>

Specified by:

getInputTypeRestriction in interface PrimitiveDistanceFunction<NumberVector<?>,DoubleDistance>

Overrides:

getInputTypeRestriction in class AbstractVectorDoubleDistanceFunction

Returns:

Type restriction